DERIVATIVE INSTRUMENTS - Balance Sheet Location of Derivatives (Details) - USD ($) $ in Thousands	Sep. 30, 2019	Dec. 31, 2018
Fair value - Derivatives in asset position
Total derivatives	$ 0	$ 2,627
Fair value - Derivatives in liability position
Total derivatives	8,003	0
Designated as Hedging Instrument \| Prepaids and other current assets \| Interest Rate Cap
Fair value - Derivatives in asset position
Interest rate caps designated as cash flow hedges	0	2,627
Designated as Hedging Instrument \| Other non-current liabilities \| Interest Rate Swap
Fair value - Derivatives in liability position
Interest rate swaps	7,883	0
Not Designated as Hedging Instrument \| Other non-current liabilities \| Interest Rate Swap
Fair value - Derivatives in liability position
Interest rate swaps	$ 120	$ 0

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- References

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Fair value, after the effects of master netting arrangements, of a financial asset or other contract with one or more underlyings, notional amount or payment provision or both, and the contract can be net settled by means outside the contract or delivery of an asset. Includes assets not subject to a master netting arrangement and not elected to be offset.

+ References

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-Publisher FASB
-Name Accounting Standards Codification
-Topic 210
-SubTopic 20
-Section 55
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-Publisher FASB
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+ References

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Fair value, before effects of master netting arrangements, of a financial liability or contract with one or more underlyings, notional amount or payment provision or both, and the contract can be net settled by means outside the contract or delivery of an asset. Includes liabilities not subject to a master netting arrangement and elected not to be offset.

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